Here are Brad’s top 5 tips:
1. Define why you want to test: what are your success metrics?
2. What are you going to learn from the test?
3. Are you going to do a/b testing at an ad group level, or by using multi ad group systems?
4. Determine how much you’re committed to looking at competitive info.
5. Set a schedule to check results, pause losers, and create new ads.